The network of lymphatic capillaries of the human skin was depicted at the distal part of the tibial plateau by fluorescence microlymphography (fluorescein isothiocyanate-dextran 150,000). Intralymphatic pressure was determined in 28 lymphatic capillaries of 21 healthy volunteers (mean diameter 56.0 +/- 10.0 microns) by a servo-nulling pressure system. It averaged 4.0 +/- 4.5 mmHg (range: -6.8 to +10.7 mmHg). These are the first measurements of pressure in the initial lymphatics of human skin and form a basis with which to compare measurements made in patients with different forms of edema.
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Spiegel et al. (1992) studied this question.